Use Linux::Inotify2 (Inotify is obsolete). Here is an example:
use warnings;
use strict;
use Linux::Inotify2;

   my $target = defined $ARGV[0]?$ARGV[0]:'.';
   print STDERR "Watching $target...\n";

   my $in2 = Linux::Inotify2->new();
   die "Inotify2: $!" if (! defined $in2 );
   
   $in2->watch ($target, IN_ALL_EVENTS) or die "watch: $!";
   
   while (1) {
      for my $e ($in2->read()) {
          print "$e->{name} ".$e->mask."\n";
          translate_event($e);
      }
   }

sub translate_event
{
   my ($ev) = @_;
   my $action = $ev->fullname;

   $action .= " was read" if ($ev->IN_ACCESS);
   $action .= " opened for writing was closed" if ($ev->IN_CLOSE_WRITE
+);
   $action .= " not opened for writing was closed" if ($ev->IN_CLOSE_N
+OWRITE);
   $action .= " created in watched directory" if ($ev->IN_CREATE);
   $action .= " deleted from watched directory" if ($ev->IN_DELETE);
   $action .= "Watched file/directory was itself deleted" if ($ev->IN_
+DELETE_SELF);
   $action .= " was modified" if ($ev->IN_MODIFY);
   $action .= "Watched file/directory was itself moved" if ($ev->IN_MO
+VE_SELF);
   $action .= " moved out of watched directory" if ($ev->IN_MOVED_FROM
+);
   $action .= " moved into watched directory" if ($ev->IN_MOVED_TO);
   $action .= " was opened" if ($ev->IN_OPEN);
 
   print "$action\n";
   #return $action?$action:' unknown action';
}

[download]
Just run the required script (maybe using system) when you detect the change you are interested in.

In reply to Re: Automation with Perl by cdarke
in thread Automation with Perl by Zanooda

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.